This is an ISO 6400 image shot last night of a commuter presumably on her way home from work.
I try not to use the 135mm on the London Underground because it can be difficult to get a high shutter speed but it was too late to change lens.
This was shot at f/2.2 with a shutter speed of 1/250 seconds at ISO 6400. AF was lousy due to the dark hair / dark overcoat.
Unfortunately, I couldn’t clean up the noise in Lightroom; the same picture from Digital Photo Professional (DPP) was so much cleaner and if this was professional work, I would have processed this with DPP for the client but I have gone with the Lightroom version for this blog.
Update: After writing the above, I downloaded and installed Neat Image to clean up this picture.